5.8 Types of Sampling

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What is systematic sampling?

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Systematic sampling is a method where you select every nth individual from a list or sequence. For example, interviewing every 10th student who enters the school.

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What is convenience sampling?

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Convenience sampling is a non-probability sampling method where you select individuals who are easiest to reach. For example, surveying the first 30 students who come into a class.

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Define population in the context of sampling.

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A population is the entire group of individuals or instances about whom we hope to learn.

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What is stratified sampling?

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Stratified sampling is a method where the population is divided into subgroups (strata) and random samples are taken from each stratum. For example, picking 3 students from each class period.

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What is volunteer response sampling?

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Volunteer response sampling is a method where individuals choose to participate in a survey or study, often leading to biased results. For example, political webpages allowing readers to rate their opinions.

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What is simple random sampling?

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Simple random sampling is a method where every individual has an equal chance of being selected. For example, drawing names from a hat.

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What is the difference between population and sample?

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A population includes all members of a defined group, while a sample is a subset of the population used to represent the whole.

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What is cluster sampling?

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Cluster sampling is a method where the population is divided into clusters, and entire clusters are randomly selected. For example, selecting entire classrooms for a survey.

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What are the advantages of systematic sampling?

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Systematic sampling is easy to implement and ensures a spread across the population, reducing bias.

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What are the disadvantages of convenience sampling?

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Convenience sampling can lead to biased results as it does not represent the entire population.